dvd::rip will allow you encode DVD discs on the fly, but it is recommended that you copy the DVD image into your harddrive because a) it puts less stress on your DVD-rom and b) some transcode features are not supported when doing on-the-fly encoding.

You can change the video frame size and resolution (4:3, 16:9 etc) when encoding the video files.

You can also rip and all the subtitles on a DVD.

You can choose to rip or encode just a few selected chapters from a DVD, which is nice if you want to encode DVD discs with music videos.